Wordpress custom hook to change user role after expiration date

expire_user.php

function change_expired_users_role()
{
	$args = array(
		'role' => 'member_trial',
	);

	$users = get_users($args);

	if (empty($users))
		return;

	$expiration = 60 * 60 * 24 * 14;
  
	foreach ($users as $user) {
		if (time() > (strtotime($user->user_registered) + $expiration)) {
			$user->remove_role('member_trial');
			$user->add_role('subscriber');
		}
	}
}

add_action('custom_hook', 'change_expired_users_role');